http://nopr.niscair.res.in/handle/123456789/4774 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/4971 Title: Catalytic wet air oxidation of carboxylic acid present in wastewater <br/> <br/>Authors: Kumar, Pradeep; Raghavendra, P V K; Chand, Shri <br/> <br/>Abstract: Catalytic Wet Air Oxidation (CWAO) of acrylic acid, a representative of carboxylic acids, was carried out in a pressurized reactor at a partial pressure of air (4 kg/cm²) and temperature (140-180°C) to reduce the COD of wastewater containing acrylic acid. Catalysts tested include both homogeneous (CuSO₄ and FeSO₄) and heterogeneous [Co: Bi (5:1) and Mn: Ce (1:1)] catalysts. Catalytic activity of Mn: Ce (1:1) at 5g/l was best with 86% COD reduction at 180°C and air partial pressure 4 kg/cm² in 6 h. Initial pH of the solution has strong effect on COD reduction. Reaction kinetics of wet air oxidation of acrylic acid fitted well a first order kinetics with respect to COD of acrylic acid. Catalysts activity was correlated in terms of the physical characteristics. <br/> <br/>Page(s): 838-842 http://nopr.niscair.res.in/handle/123456789/4970 Title: Aerobic and anaerobic treatment of fruit juice industry effluents <br/> <br/>Authors: Ozbas, Emine Elmaslar; Tufekci, Nese; Yilmaz, Gulsum; Ovez, Suleyman <br/> <br/>Abstract: This study investigates biological treatment of fruit juice industry effluents in sequencing batch reactor (SBR), activated sludge reactor (ASR) and anaerobic upflow sludge blanket reactor (UASB). At anaerobic biological treatability studies, seed sludge was acclimated to the medium and 95% of COD removal was obtained within a few weeks. At the end of anaerobic study, organic loading rate was increased to 5 kg COD/m³-day and the hydraulic retention time was decreased to 2.3 days. At the aerobic biological treatability studies, 90-95% soluble COD removal was achieved for both wastewaters (sour cherry and apple) in SBR and in ASR. In addition to aerobic biological treatability studies, microbiological investigation, and kinetic and stociometric coefficients were determined. At the end of microbiological examination, fungi overwhelmingly dominated the system. <br/> <br/>Page(s): 830-837 http://nopr.niscair.res.in/handle/123456789/4969 Title: Experimental adaptive vibration control of smart structures using LVQ neural networks <br/> <br/>Authors: Kumar, Rajiv; Singh, S P; Chandrawat, H N <br/> <br/>Abstract: This<b> </b>paper presents experimental adaptive identification and control of a smart structure featuring piezoceramic-based sensors/actuators. An inverted L-structure with surface bonded piezoceramic sensors/actuators is used for analysis. The state-space presentation, from control input voltages to output sensor voltage is established in multivariable form. It is assumed that the parameters of the smart structure are changing at fast rates. Computational time required for classical identification techniques is generally quite high. For the system, whose parameters change quickly with time, classical system identification techniques fail. So, for improving the system performance, Linear Quadratic Regulator (LQR) cannot be re-designed in real-time for changed parameters of the flexible structure, even if these parameters are identified in real time. Closed loop identification of system parameters and control gains based on system classification technique is proposed for the systems changing at fast rates. <br/> <br/>Page(s): 798-807 http://nopr.niscair.res.in/handle/123456789/4968 Title: Vendor-customer relationship for product design - An exploratory study of Indian automotive industry <br/> <br/>Authors: Bhardwaj, Arvind; Sushil; Sharma, S K; Sharma, Vishal S <br/> <br/>Abstract: Study focuses on the partnership between Indian automotive vendors and vehicle manufacturers for product design activity. A structured questionnaire was developed to collect unit level data. Questionnaire included closed ended questions and the responses were taken on a 5-point scale. Responses (84) were collected from vendor organizations (40). Vendors were clustered into different categories for bringing out their characteristics. The level of involvement of vendors in the product design activity for their customers was investigated. A very low involvement of vendors was observed for this activity and there is a lot of variation with respect to this activity for different Clusters. <br/> <br/>Page(s): 794-797